is a disturbance that lasts for at least 6 months and includes at least 1 month of active-phase symptoms (i.e., two [or more] of the following delusions, hallucinations, disorganized speech, grossly disorganized or catatonic behavior, negative symptoms). Definitions for the Schizophrenia subtypes (Paranoid, Disorganized, Catatonic Undifferentiated, and Residual) are also included in this section.
Schizophreniform Disorderis characterized by a symptomatic presentation that is equivalent to Schizophrenia except for its duration (i.e., the disturbance lasts from 1 to 6 months) and the absence of a requirement that there is a decline in functioning.
Schizoaffective Disorder is a disturbance in which a mood episode and the active-phase symptoms of Schizophrenia occur together and were preceded or are following by at least 2 weeks of delusions or hallucinations without prominent mood symptoms.
Delusional Disorder is characterized by at least 1 month of nonbizarre delusions without other active-phase symptoms of Schizophrenia.
Brief Psychotic Disorder is a psychotic disturbance that lasts more than 1 day and remits by 1 month.
Shared Psychotic Disorder is a disturbance that develops in an individual who is influenced by someone else who has an established delusion with similar content.
In Psychotic Disorder Due to a General Medical Condition, the psychotic symptoms are judged to be a direct physiological consequence of a general medical condition.
In Substance Induced Psychotic Disorder, the psychotic symptoms are judged to be a direct physiological consequence of a drug of abuse, a medication, or toxin exposure.
Psychotic Disorder Not Otherwise Specified is included for classifying psychotic presentations that do not meet the criteria for any of the specific Psychotic Disorders defined in this section or psychotic symptomatology about which there is inadequate or contradictory information. (p. 273-4)
